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CVE-2026-63758 surrealdb CVE debrief

CVE-2026-63758 is an authorization bypass vulnerability in SurrealDB versions before 3.1.0. The vulnerability allows authenticated database users to terminate other users' LIVE SELECT subscriptions by issuing KILL statements with target live query UUIDs without ownership verification. This issue affects SurrealDB deployments where multiple users have access to the database, potentially disrupting real-time data subscriptions. Users should assess their exposure and plan for upgrades or mitigations accordingly. The CVE record was published on 2026-07-20T12:19:45.900Z and has limited information available about specific impact and affected configurations.

Vendor
surrealdb
Product
Unknown
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-20
Original CVE updated
2026-07-22
Advisory published
2026-07-20
Advisory updated
2026-07-22

Who should care

Users of SurrealDB versions before 3.1.0 should be aware of this vulnerability and take steps to upgrade to a patched version. Additionally, administrators and security teams responsible for database systems may need to assess and mitigate potential risks associated with this vulnerability.

Technical summary

The vulnerability exists in the KILL statement of SurrealDB versions before 3.1.0. An authenticated database user can terminate other users' LIVE SELECT subscriptions by providing the target live query UUIDs in a KILL statement. This action can be performed without verifying ownership of the target subscription, effectively bypassing authorization checks. The issue arises from insufficient access controls in the KILL statement implementation, allowing for potential disruptions in real-time data processing. SurrealDB administrators should review and monitor database user activity for suspicious KILL statements and implement additional logging and monitoring for LIVE SELECT subscriptions.

Defensive priority

Medium priority should be given to patching SurrealDB installations, as the vulnerability allows for disruption of real-time data subscriptions without requiring elevated privileges. Additionally, administrators should assess potential risks and implement monitoring for suspicious activity.

Recommended defensive actions

  • Upgrade SurrealDB to version 3.1.0 or later
  • Review and monitor database user activity for suspicious KILL statements
  • Implement additional logging and monitoring for LIVE SELECT subscriptions
  • Restrict access to the KILL statement for sensitive databases or users
  • Perform regular security audits to identify and address potential vulnerabilities
  • Monitor for unusual patterns in database user behavior
  • Implement compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record was published on 2026-07-20T12:19:45.900Z and was last modified on 2026-07-21T18:37:56.803Z. The NVD entry is currently Awaiting Analysis. Limited information is available about the specific impact and affected configurations. The vulnerability allows authenticated database users to terminate other users' LIVE SELECT subscriptions by issuing KILL statements with target live query UUIDs without ownership verification. This issue affects SurrealDB versions before 3.1.0.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-20T12:19:45.900Z and has not been modified since then. The NVD entry is currently Awaiting Analysis.